Oil well jack

Details Oil well jack Oil well jack

1983-06-23

1985-05-28

Maslousky, Paul E.

Motors: expansible chamber type

Relatively movable working members with one having motive...

Single valve unit controlling plural working chambers

91186, 91279, 91346, 251 75, F01L 3102, F01B 100

Patent

active

045192936

ABSTRACT:
The invention relates to an oil well jack having a walking beam mounted on a frame for motion in a vertical plane; and a plurality of hydraulic actuators connected to move the walking beam. The amplitude of movement of the beam as well as the frequency of the stroke are adjustable through regulation and control of the hydraulic system.

REFERENCES:
patent: 3128675 (1964-04-01), Dulaney
patent: 3167083 (1965-01-01), Nickell
patent: 3971213 (1976-07-01), Kelly
patent: 4201115 (1980-05-01), Ogles

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